How to use VirtualGL without running an application on display 0 first?

[Niklas]

I am using vncserver to connect to a CentOS7 machine in the network. In order to make use of 3D graphics accelerations I am using VirtualGL. So any OpenGL program needs to be launched with vglrun to make use of OpenGL.

This works like a charm but only if I log myself in on DISPLAY 0 and launch at least one OpenGL application beforehand. In other words:

If I

• reboot the machine,
• directly start a vncserver and
• connect to it with a client,

no OpenGL application is working and I get the error

[VGL] ERROR: Could not open display :0.

As soon as I log myself in on DISPLAY 0 and start an OpenGL application the error does not occur anymore until the machine is rebooted again.

My question:
How can I run OpenGL applications with vglrun without first running an OpenGL application on DISPLAY 0 after rebooting the machine?

[DRC]

Have you run vglserver_config as specified in the User’s Guide?

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